Retrofit @ java.lang.IllegalArgumentException：@FieldMap鍵必須是字符串類型：K（參數＃2）

Question

此例外只出現在一部手機中，而其他手機正常。我應該如何解決這個問題？這個異常與proguard有關嗎？

詳細例外：

java.lang.IllegalArgumentException: @FieldMap keys must be of type String: K (parameter #2) 
for method g.d 
at retrofit2.ServiceMethod$Builder.methodError(Unknown Source) 
at retrofit2.ServiceMethod$Builder.methodError(Unknown Source) 
at retrofit2.ServiceMethod$Builder.parameterError(Unknown Source) 
at retrofit2.ServiceMethod$Builder.parseParameterAnnotation(Unknown Source) 
at retrofit2.ServiceMethod$Builder.parseParameter(Unknown Source) 
at retrofit2.ServiceMethod$Builder.build(Unknown Source) 
at retrofit2.Retrofit.loadServiceMethod(Unknown Source) 
at retrofit2.Retrofit$1.invoke(Unknown Source) 
at $Proxy0.d(Native Method) 

Answer 1

由於沒有代碼片段，我建議你向你的服務方法的簽名更改從@FieldMap HashMap/Map params到@FieldMap HashMap<String, String> params。並稱它是這樣的

HashMap<String, String> params = ServiceUtil.getInstance().getDefaultParams(); 
           maisService.fetchAjudaCategorias(params) 

這應該很好。